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- Change the example CFLAGS entry to match our default in sys.mk.

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- Document that -fno-strict-aliasing is required for -O2.

Prodded by:	users of stable@
This commit is contained in:
Ruslan Ermilov 2006-09-13 10:20:56 +00:00
parent adab0fdc4f
commit bb077f2d54
1 changed files with 7 additions and 3 deletions
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10
share/examples/etc/make.conf
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@ -48,10 +48,14 @@
# CFLAGS controls the compiler settings used when compiling C code.
# Note that optimization settings other than -O and -O2 are not recommended
# or supported for compiling the world or the kernel - please revert any
# nonstandard optimization settings to "-O" or -O2 before submitting bug
# reports without patches to the developers.
# nonstandard optimization settings to "-O" or "-O2 -fno-strict-aliasing"
# before submitting bug reports without patches to the developers.
#
#CFLAGS= -O -pipe
# Compiling with -fstrict-aliasing optimization breaks some [notable] ports.
# GCC turns on -fstrict-aliasing optimization at all levels above -O[1], so
# explicitly turn it off when using compiling with the -O2 optimization level.
#
#CFLAGS= -O2 -fno-strict-aliasing -pipe
#
# CXXFLAGS controls the compiler settings used when compiling C++ code.
# Note that CXXFLAGS is initially set to the value of CFLAGS. If you wish